Improvement in electro-magnetic motors



UNITED STAT-Es .ALFRED .SHEDLOCIQ QFNEW YORK, ;N..Y.

IM PROVEMENT `IN ELECTRO-.MAGN ETIC MOTORS.

- Specicationjformingpart of Letters Patent No. 177;,359pdated May 1 6, 1876 `application filed February l12, 1876.

To all whom 'it may concern:

-Beit kno\vn that I, ALFRED SHEDLOCK, of'

the city of New York, county and State of New York, have invented certain Improvements in Electro-Magnetic Motors, of Which the following is a specification This invention relates to improvements in electro-magnetic motors, and consists of a rheotome, or circuit-breaker, composed of three straight fiat springs soldered to one of the ends of the wire coils of the three magnets. The springs are fastenedto a block ot' wood, the wood being'secured to the frame of the machine by three disks, with as many ridges on their peripheries as there are armatures in the wheel. These disks are fastened to a hub fitted on the shaft of the armature-wheel, and a plate ot' copper fastened to the Wood just under the loose ends of the springs. The connecting-Wires, bearing the positive current of two batteries, are brought into contact with this plate by being held inv insulated posts from which springs project. The negative wires of the batteries are attached to the other ends of the coils ofthe magnets. The springs from the insulated posts are pressed against the plate by an arm projecting from a lever, to which a spring is attached in such a manner as to cause it to act as a brake by bearing against a brake-Wheel when the pressure is removed therefrom. This brake-lever is operated by the knee or foot, thus leaving both hands free to work the machine driven by the motor. The springs do not leave the plate at the same time, and one of them is in contact with it after the brake bears on the Wheel, so that the speed of the machine is governed to anicety. On the three flat springs are rollers or rounded projections of wood or other good non -conducting vmaterial, which bear against the ridged disks. These disks may also be made of Wood, and may be one solid cylindrical piece, with the ridges formed thereon. The object of making them of one piece, or securing the three disks to the hub, is to facilitate the adjustment of the machine. By setting it to close and open the circuit for one magnet .at the right time, it Will be set for allot' them. over which the electric current passes are made of copper, and are insulated from the All the springs and connections frame of the machine,4 and consequently the current is not retarded.

In the accompanying drawings, forming part of this specification, Figure l is an end View of my improvements in electro-magnetic motors, and Fig. 2 is a front view ofthe same.

a represents the frame, in which the shaft b has bearings. On the shaft b is the armature-Wheel c, having six armatures. The magnets d e f are secured to the bed of the frame a, and one of each ot the Wire coils of the magnets def are brought together, as shown at z, to which one of the Wires from the battery is attached. The other ends d ef of the Wire coils are fastened to the at springs g h t', which are secured at one end to a piece of Wood, so as not to touch one another, the Wood being secured to the side frame of the motor. The other ends'of the springs g h t' project over the plate 0, and they are made to touch the platee by the ridged disks g h t', which are so set on the shaft b that they act ou the springs g h t', so as-to cause the electric current to pass through the magnets and be out off from them at the right time. The circuit is completed by fastening the wire from the other pole of the battery to the spring j, as shown at p. The spring j is pressed against the platee by the arm l1 from the lever Z, which rocks on the stud a. llhe hole in the lever l, through which the stud a passes, is slotted,so that When the upperv part of the leverl is pushed in toward the machine, the arm l1 Will conse the spring j to bear against the plate o before the part l2 ofthe lever leaves the brake- Wheel m Which is part of the driving-pulley m. The part Z2 of the lever is caused to bear against the Wheel m by the action of the spring n, one end of which is fastened to the frame a. To the stud 7s is att-ached the Wire p from the auxiliary battery, and the current from this battery is caused to pass through the magnets by pressing on the lever Z sufiiciently to press the spring j against the stud k, the spring j still bearing against plate 0. In removing the pressure of the knee or foot from the lever l, the spring j first leaves the stud le, the brake l2 is brought in contact with the Wheel m', and finally the spring j leaves the plate o.

I do not Wish to conne myself tothe exact position of the springs g' k i, as they may be operated by one disk, having ridges on its face, by placing them at right angles to their position shown in the drawings, the projections on the springs being so arranged that the ridges will Work them alternately; but

What I claim, and desire to secure by Letters Patent, is-

l. The combination of the springs g h i, secured to the insulating-block, the rigid -conducting-plate o, and the cylinder formed with the series of ridgesg h' i', the bearing-point ofthe ridges on the springs being between the block and plate, substantially as hereinbefore set forth.

2. The combination of the magnets d e f,

magnetic motor, substantially as and for the l purposes hereinbefore set forth.

ALFRED SHEDLOGK. Witnesses: Y

JOHN S. TAYLOR, WILLIAM SHEDLooK. 

